Question

A force of 5n gives a mass m1, an acceleration of 10 m s -2 and a mass m2, an acceleration of 20 m s -2. what acceleration it would give if both the masses were tied together?

Answer 1

Answer:

by second newton law f=m*a

m1 =f/a

=1/2kg

m2=1/4kg

total mass= 1/2+1/4

=3/4kg

a=f/m

=5/3/4

=20/3 m/s^2

Answer 2

Answer:

force=5N

acceleration =10m/s^2

mass (m1)=?

force=mass×acceleration

mass=force/acceleration

=5/10

0.5kg

then

other body

force=5 Newton

acceleration=20 m/s

mass(m2)=?

similarly

m2=5/20

=0.25kg

then

both masses tied together

(0.25+0.5)=0.3kg

then

acceleration=?

force=5N

mass=0.3kg

acceleration =force/mass

=5/0.3

=16.66m/s^2

Explanation: